Spear for spring shade-rollers.



E. F. HARTSHORN.

SPBAR POR SPRING SHADE ROLLERS.

IIIIIIIIIIIIII 1m- JULY 1, 191'2.

1,093,930. Patented Apr. 21, 1914 nNrran srarns PATENT onirica.

EDMUND r. HARTSH'O'RN, or NEWANi'tK, NEW JERSEY, assieivot rrdy 'sTnWAitrHitrs- HORN COMPANY, or nAs'r NEWARK, NEW 'rnasnv, A CORORATON *or NEW JERSEY.

srEAR non SPRING SHADE-Romans.

specification of Letters' Patent.

Patented Apr. 2i, 1914..

Application inea .my 1, 1912. serial No. 706,87'9.

.To all' whom t may concern:

Be it known that I, EDMUND F. HARTs- HORN, a citizen of the United States, residing in Newark, county of Essex, State of New Jersey, have invented a certain new and useful Spear for Spring Shade-Rollers, of which the following is a specification.

The object I have in view is the production of a spear for use in connection with spring shade rollers.

The particular objects are to simplify the spear, reduce the cost thereof, and render it more easily attached to the spindle.

These and further objects will more fully appear from the following specification and the accompanying drawings, considered together or separately.

The invention may be considered as an improvement on the spear disclosed in my co-pending applications for patent, both filed June 25, 1910, Serial Nos. 568,763 and 568,764.

In the accompanying drawings, Figure 1 is a side elevation of a spear embodying my invention, in connection with a spring shade roller, certain parts of the roller being shown in section. Fig. 2 is an end view of the roller illustrated in Fig. 1. Fig. 3 is a perspective view of a spear embodying the invention, shown in connection with the end of the spindle to which it is to be attached.

In all of the views, like partsare designated by the same reference characters.

Referring to the drawings, the spear l is shown ofgeneral flat cross-sectional shape. I prefer to make it of steel or other suitable material. It may be a casting, stamping, or made in any other manner. The spear comprises a body 2, with a tip 3 extending from one end. This tip is sufliciently long to serve three functions: the part nearest the body serves as a bearing in the cap; the part intermediate the ends serves as a ratchet for engagement with the pawls; and the part at the eXtreme end serves as a support for engagement with the usual supporting bracket. I prefer to make the tip of rectangular section, as shown. I also prefer to make it of the same dimensions throughout its length, and of the same cross-sectional shape in all parts. This makes a very simple itting, with a minimum amount of work upon it. is adapted to be attached to the spindle in The spear s 1 and 2.

.I prefer to bevel the ends of the inner edgesvof the legs at 6, as shown. This, however, is not necessary.` By beveling the legs the end of the spindle is more easily inserted between them, I also prefer to round the outer edges of the legs at 7. A spring (to be described) surrounds the legs, and by rounding the outer edges of the legs, the wear uponrthe spring when it comes in contact with the legs is reduced.

This improjved'spear is adapted to be used with a spindle, such as 8. In order to attach the spear to the spindle, the latter is provided, at one end, with oppositely disposed grooves 9, 9. These grooves are sufficiently long to form beds for the legs when the latter straddle the end of the spear. The depth `of the grooves and their width willpbe such that the legs of the spear will produce a tight fit when the spear is driven in place, and will so be retained. The end of the spindle is preferably provided with a notch 10, at right angles to the before-described grooves. This notch receives the end of the spring 11. The spear being seated upon theend of the spindle, will retain the end of the spring within the notch. The usual roller 12 is adaptedto contain the spear, spindle and spring. The end of the roller is inclosed by a ferrule 13, of the usual shape. This ferrule Aretains the cap 14 in position. The cap 14 is of the usual shape, and is provided with a central opening, which forms a bearing or the spear. The cap also carries the pawls 15, 15. Any form of pawl may be used, but those illustrated are preferred. Each pawl is provided with a notch 16. This notch is angular in shape, and is adapted to engage with the square end of the tip. y A

The parts are assembled as shown in Figs. The shoulders 5, 5, abut against the inner side of the cap. The opening is larger than the tip, but smaller than the shoulders, so that the shoulders engage with the cap. It Will be seen that the tip serves three functions, already described. It engages Within the bearing in the cap; it serves as a ratchet for engagement with the pavvls; and its projecting extremity serves as a. support for engagement With the bracket.

I have found that the squared edges of the tip mounted Within the bearing in the cap form a satisfactory support for that end of the roller. I find that there is no need of rounding the edges of the tip for the engagement of the bearing. I also find that the pawls readily engage With the squared edges of the tip and lock the roller against rotation. According to my invention, I

produce a very satisfactory spear of the simplest shape.

In accordance with the provisions of the patent statutes, I have described the principle of my invention, together With the apparatus which I now consider to represent the best embodiment thereof; but I desire to y have it understood that the apparatus shown is merely illustrative and that the invention can be carried out in other Ways.

Having now described my invention, what I claim as nevv and desire to secure by Letters Patent, is:

l. A spear for a 'spring shade roller, of substantially rectangular cross section throughout its length and having a long fiat tip of the same cross-section throughout, said tip being adapted for engagement with the pawls, and also with the supporting bracket.

2. A spear for a spring shade roller, of substantially rectangular erosssection throughout its length, with a long fiat tip, of the same cross-section throughout, said tip being adapted for engagement with the pawls and also with the supporting bracket, and means for engaging the spear with the spindle.

3. A spear for a spring shade roller,

v of substantially rectangular cross-section throughout its length with a tip, of the saine cross-section throughout its length, said tip being sufliciently long to be engaged by the pawls and also engaged by the supporting bracket.

4. A spear for a spring shade roller, of substantially rectangular crosssection throughout its length, with a portion adapted to engage With the spindle, also having a tip, said tip being of Yuniform cross-section throughout its length and having a portion which is adapted to engage with the pawls, and a portion which is adapted to engage With the supporting bracket.

5. A spear for a spring shade roller, of substantially rectangular cross section throughout its length and having a long flat tip of uniform cross-section throughout, said tip being adapted for engagement with the pawls, and also with the supporting bracket, said spear having legs which straddle the spindle and engage with it.

6. A spear for a spring shade roller, of substantially rectangular cross section throughout its length and having a long fiat tip, of uniform cross-section throughout, said spear having a body portion with shoulders, said tip being adapted for engagement with the pawls and also with the supporting bracket, and said shoulders being adapted for engagementl with the cap, and means for engaging the spear with the spindle.

7. A spear for a spring shade roller, of substantially rectangular cross section throughout its length and having a long fiat tip of uniform cross-section throughout, said tip being adapted for engagement with the pawls, and also with the supporting bracket, and having legs which straddle the spindle and engage with it, the inner edges of the legs being beveled.

8. A spear for a spring shade roller, of substantially rectangular cross section throughout its length and having a long iiat tip of uniform cross-section throughout, said tip being adapted for engagement with the pawls, and also with the supporting bracket, and having legs which straddlc the spindle and engage with it, the outer edges of the legs being rounded.

9. In a spring shade roller, a spear of substantially rectangular cross-section throughout its length and having a long fiat tip of uniform cross-section throughout, said tip being adapted for engagement with the pawls, and also with the supporting bracket, in combination with pawls, said pawls having notches which engage with the squared edges of the tip.

10. Ina spring shade roller, a spear of substantially rectangular cross-section throughout its length and having a long fiat tip, of uniform cross-section throughout, said tip being connected to the body by separating shoulders, in combination with a cap, said cap carrying pawls,the ends of the pawls being notched, which engage with the tip, and the shoulders engaging with the cap.

This specification signed and witnessed this 20th day of June, 1912.

EDMUND I?. lfli'klt'llSliORN.

i Witnesses:

C. STURGIN, ALEX C. ADAMS.

-copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

